Work

When Gold Is Not Noble: Nanoscale Gold Catalysts

Year: 1999

Type: article

Abstract: While inert as bulk material, nanoscale gold particles dispersed on oxide supports exhibit a remarkable catalytic activity. Temperature-programmed reaction studies of the catalyzed combustion of CO on size-selected small monodispersed Au n ( n ≤ 20) gold clusters supported on magnesia, and first-principle simulations, reveal the microscopic origins of the observed unusual catalytic activity, with Au 8 found to be the smallest catalytically active size. Partial electron transfer from the surface to the gold cluster and oxygen-vacancy F-center defects are shown to play an essential role in the activation of nanosize gold clusters as catalysts for the combustion reaction.

Source: The Journal of Physical Chemistry A

DOI: 10.1021/jp9935992

Authors: A. Sanchez, S. Abbet, U. Heiz, W.-D. Schneider, H. Häkkinen, R. N. Barnett, Uzi Landman

Institutions: Georgia Institute of Technology, University of Lausanne

Language: English

Topic: Catalytic Processes in Materials Science

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2033830521

FWCI: 20.33

Cites: 14

Cited by: 1,461

Related to: 10